Restored generic (non-SIMD) code

neo/idlib/geometry/DrawVert.h

@@ -193,6 +193,7 @@ Assumes input is in the range [-1, 1]
 ID_INLINE void VertexFloatToByte( const float & x, const float & y, const float & z, byte * bval ) {
 	assert_4_byte_aligned( bval );	// for __stvebx
 
+#ifdef ID_WIN_X86_SSE2_INTRIN
 
 	const __m128 vector_float_one			= { 1.0f, 1.0f, 1.0f, 1.0f };
 	const __m128 vector_float_half			= { 0.5f, 0.5f, 0.5f, 0.5f };
@@ -209,6 +210,13 @@ ID_INLINE void VertexFloatToByte( const float & x, const float & y, const float
 	bval[1] = (byte)_mm_extract_epi16( xyz16, 1 );
 	bval[2] = (byte)_mm_extract_epi16( xyz16, 2 );
 
+#else
+
+	bval[0] = VERTEX_FLOAT_TO_BYTE( x );
+	bval[1] = VERTEX_FLOAT_TO_BYTE( y );
+	bval[2] = VERTEX_FLOAT_TO_BYTE( z );
+
+#endif
 }
 
 /*
@@ -609,6 +617,7 @@ ID_INLINE void WriteDrawVerts16( idDrawVert * destVerts, const idDrawVert * loca
 	assert_16_byte_aligned( destVerts );
 	assert_16_byte_aligned( localVerts );
 
+#ifdef ID_WIN_X86_SSE2_INTRIN
 
 	for ( int i = 0; i < numVerts; i++ ) {
 		__m128i v0 = _mm_load_si128( (const __m128i *)( (byte *)( localVerts + i ) +  0 ) );
@@ -617,6 +626,11 @@ ID_INLINE void WriteDrawVerts16( idDrawVert * destVerts, const idDrawVert * loca
 		_mm_stream_si128( (__m128i *)( (byte *)( destVerts + i ) + 16 ), v1 );
 	}
 
+#else
+
+	memcpy( destVerts, localVerts, numVerts * sizeof( idDrawVert ) );
+
+#endif
 }
 
 /*

neo/idlib/geometry/DrawVert_intrinsics.h

@@ -29,6 +29,7 @@ If you have questions concerning this license or the applicable additional terms
 #ifndef __DRAWVERT_INTRINSICS_H__
 #define __DRAWVERT_INTRINSICS_H__
 
+#ifdef ID_WIN_X86_SSE2_INTRIN
 
 static const __m128i vector_int_f32_sign_mask					= _mm_set1_epi32( 1U << IEEE_FLT_SIGN_BIT );
 static const __m128i vector_int_f32_exponent_mask				= _mm_set1_epi32( ( ( 1U << IEEE_FLT_EXPONENT_BITS ) - 1 ) << IEEE_FLT_MANTISSA_BITS );
@@ -50,12 +51,14 @@ static const __m128 vector_float_last_one						= {   0.0f,	  0.0f,   0.0f,   1.0
 static const __m128 vector_float_1_over_255						= { 1.0f / 255.0f, 1.0f / 255.0f, 1.0f / 255.0f, 1.0f / 255.0f };
 static const __m128 vector_float_1_over_4						= { 1.0f / 4.0f, 1.0f / 4.0f, 1.0f / 4.0f, 1.0f / 4.0f };
 
+#endif
 
 /*
 ====================
 FastF32toF16
 ====================
 */
+#ifdef ID_WIN_X86_SSE2_INTRIN
 
 ID_INLINE_EXTERN __m128i FastF32toF16( __m128i f32_bits ) {
 	__m128i f16_sign     = _mm_srli_epi32( _mm_and_si128( f32_bits, vector_int_f32_sign_mask     ), f32_to_f16_sign_shift );
@@ -77,6 +80,7 @@ ID_INLINE_EXTERN __m128i FastF32toF16( __m128i f32_bits ) {
 	return _mm_packs_epi32( flt16, flt16 );
 }
 
+#endif
 
 ID_INLINE_EXTERN halfFloat_t Scalar_FastF32toF16( float f32 ) {
 	const int f32_sign_mask				= 1U << IEEE_FLT_SIGN_BIT;
@@ -115,6 +119,7 @@ ID_INLINE_EXTERN halfFloat_t Scalar_FastF32toF16( float f32 ) {
 LoadSkinnedDrawVertPosition
 ====================
 */
+#ifdef ID_WIN_X86_SSE2_INTRIN
 
 ID_INLINE_EXTERN __m128 LoadSkinnedDrawVertPosition( const idDrawVert & base, const idJointMat * joints ) {
 	const idJointMat & j0 = joints[base.color[0]];
@@ -176,6 +181,7 @@ ID_INLINE_EXTERN __m128 LoadSkinnedDrawVertPosition( const idDrawVert & base, co
 	return r0;
 }
 
+#endif
 
 ID_INLINE_EXTERN idVec3 Scalar_LoadSkinnedDrawVertPosition( const idDrawVert & vert, const idJointMat * joints ) {
 	const idJointMat & j0 = joints[vert.color[0]];